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Thread: OSS4 Help

  1. #1
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    OSS4 Help

    So I've had alot of problems with alsa not working correctly with pulseaudio, native pulse apps were great, alsa apps had scratchy sound and sometimes weren't even getting picked up by pulse somehow and got no sound at all.

    I heard OSS4 is really good so I thought I'd try it out. I downloaded it from 4fronts site and installed the 64 bit .deb. Works Great. Sound is crystal clear and software mixing is working fantastic.

    The only problem is OSS doesn't seem to recognize that I have a capture device (my mic). The old depreciated OSS did, alsa and pulseaudio worked with it too.

    I'm not sure how to go about figuring this out, perhaps OSS4 doesn't have the driver for my card compelete?

    Here is my card, and as far as I can work out the driver OSS4 is using.
    Code:
    sudo lshw -C multimedia
    [sudo] password for jeremy: 
      *-multimedia            
           description: Audio device
           product: MCP67 High Definition Audio
           vendor: nVidia Corporation
           physical id: 7
           bus info: pci@0000:00:07.0
           version: a1
           width: 32 bits
           clock: 66MHz
           capabilities: pm msi ht bus_master cap_list
           configuration: driver=oss_hdaudio latency=0 maxlatency=5 mingnt=2 module=oss_hdaudio
    Code:
    cat /usr/lib/oss/etc/installed_drivers 
    oss_hdaudio #Nvidia High Definition Audio (MCP67)
    oss_usb #Generic USB audio/MIDI device (BETA)
    Code:
    Version info: OSS 4.1 (b 1052/200903240621) (0x00040100) 
    Platform: Linux/x86_64 2.6.28-14-generic #47-Ubuntu SMP Sat Jul 25 01:19:55 UTC 2009 (psion)
    
    Number of audio devices:	6
    Number of audio engines:	10
    Number of mixer devices:	1
    
    
    Device objects
     0: osscore0 OSS core services
     1: oss_hdaudio0 nVidia HD Audio interrupts=74224 (150060)
        HD Audio controller nVidia HD Audio
        Vendor ID    0x10de055c
        Subvendor ID 0x103c30cf
         Codec  0: Unknown (0x14f15051/0x103c30cf)
     2: oss_usb0 USB audio core services
    
    
    Mixer devices
     0: High Definition Audio 0x14f1505 (Mixer 0 of device object 1)
    
    Audio devices
    HD Audio play pcm1                /dev/oss/oss_hdaudio0/pcm0  (device index 0)
    HD Audio play pcm2                /dev/oss/oss_hdaudio0/pcm1  (device index 1)
    HD Audio play pcm3                /dev/oss/oss_hdaudio0/pcm2  (device index 2)
    HD Audio play spdifout            /dev/oss/oss_hdaudio0/spdout0  (device index 3)
    HD Audio rec rec1                 /dev/oss/oss_hdaudio0/pcmin0  (device index 4)
    HD Audio rec pcm3                 /dev/oss/oss_hdaudio0/pcmin1  (device index 5)
    Last edited by jerome1232; August 7th, 2009 at 08:48 PM.
    "You can't expect to hold supreme executive power just because some watery tart lobbed a sword at you"

    "Don't let your mind wander -- it's too little to be let out alone."

  2. #2
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    Re: OSS4 Help

    Well it seems all it took was alot of experimental switch flipping and box checking to get it working. OSS4 is working fantastically for me now (is that a word?)

    Here is a link to the thread that helped me in case anyone is interested. http://4front-tech.com/forum/viewtop...?p=13084#13084
    "You can't expect to hold supreme executive power just because some watery tart lobbed a sword at you"

    "Don't let your mind wander -- it's too little to be let out alone."

  3. #3
    Join Date
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    Re: OSS4 Help

    OSS 4 rules, the problem of weak mic in Skype got me to switch, I had to install Skype OSS version as well but the sound quality is like WOW! huge difference over ALSA. The recordings I thought were bad now come out in revealing details. Best method to install OSS4 trouble free is from Ubuntu's own help at https://help.ubuntu.com/community/OpenSound

  4. #4
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    Re: OSS4 Help

    Thank you for that link, looking over makes me fairly confident I installed OSS4 correctly which I was slightly worried about.

    But yeah, I'm loving OSS4! Sound has been the one weak link for me and oss4 does everything I need, including stream by stream control of sound volume (which is what I loved about pulse).

    Really my only gripe was ALSA though, if wine would've made a plugin for for pulse audio I probably would never have gotten fed up with everything and attempted the switch.
    "You can't expect to hold supreme executive power just because some watery tart lobbed a sword at you"

    "Don't let your mind wander -- it's too little to be let out alone."

  5. #5
    Join Date
    Jun 2007
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    Re: OSS4 Help

    Thank you - pulse was using way too much CPU and sound was choppy.
    Folks love opensource, but when stuff breaks some bail back to windows.
    OSS - I'll support this $$ for sure. Nerds only have so much time and opensource could benefit from more $$ to pay talented folks that otherwise work to pay the bills.

    Flash not working yet, else the rest is pleasant and I got my CPU back.

    Thanks again for posting this.

  6. #6
    Join Date
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    Re: OSS4 Help

    Quote Originally Posted by jerome1232 View Post
    Well it seems all it took was alot of experimental switch flipping and box checking to get it working. OSS4 is working fantastically for me now (is that a word?)

    Here is a link to the thread that helped me in case anyone is interested. http://4front-tech.com/forum/viewtop...?p=13084#13084
    That link is no longer working unfortunately. I seem to have more or less the same problem. The microphone (which worked fine with ALSA) does not seem to be recognised by the OSS4 driver. The chipset is an Nvidia High Definition Audio (MCP78S), and ossinfo seems to show only one recording device:

    Code:
    HD Audio rec select1              /dev/oss/oss_hdaudio0/pcmin0  (device index 6)
    HD Audio rec pcm4                 /dev/oss/oss_hdaudio0/pcmin1  (device index 7)
    Any hints?

    -L

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